Spectre.css is a lightweight, responsive and modern CSS framework for faster and extensible development.

Spectre provides basic styles for typography and elements, flexbox based responsive layout system, pure CSS components and utilities with best practice coding and consistent design language.

Flexbox grid
Flexbox based responsive grid system with 12 columns
Responsive layout grid system and responsive visibility utilities
Container for key featured content or information
Layout container that appears in the header of apps and websites